Step 1: Gather Ingredients

Duct tape
3 Strips of Aluminum Foil (Fold it over 2 or 3 times to make sturdy strips the width of a penny)
2 Pennies from 1981 or before (these 95% copper, vs a thin coating)
1 Paper Towel
Dish Soap
Scissors

I've realized that sealing the first layer with duct tape may not be required as I revisit some of the other designs. I will try without sealing to see if I can still reliably generate one volt with 2 pennies and post the results here.